T-Motor ITS 1604.5

What it pulls

T-Motor’s own bench test, one line per prop. Drag across the chart to move the throttle; the model above follows.

What you get for $22.90

• Co-developed with IT'S FPV

  T-Motor's T-Hobby brand made it with IT'S FPV as a crash-resistant motor for 3.5-inch freestyle, built to 5-inch freestyle structural standards.

  Source: Ligpower (T-Motor) product page, T-Hobby product page

• 3 mm titanium through-shaft

  A full-length 3 mm titanium shaft holds the prop with a single M3 nut instead of a T-mount's M2 screws, which T-Motor says is more durable and quicker for prop swaps.

  Source: Ligpower (T-Motor) product page

• CNC unibell

  A one-piece CNC-machined 7075 aluminium bell held by a single M2 screw underneath, which T-Motor says makes maintenance easier.

  Source: Ligpower (T-Motor) product page, T-Hobby product page

• 599 g on 4S

  At full throttle at 16.3 V it pulled 599 g at 19 A on a Gemfan 3525-3, the prop T-Motor recommends.

  Source: Ligpower (T-Motor) product page

What to pair it with

Our reading of T-Motor’s numbers, so your build matches what the motor was tested with.

ESC

Peak current is 19 A. T-Hobby suggests a 35–45 A 4-in-1 ESC or AIO. (Ligpower (T-Motor) product page, T-Hobby product page)

Props

T-Motor recommends Gemfan's 3525-3; on it the motor pulled 240 g at half throttle and 599 g at full throttle on 4S. (Ligpower (T-Motor) product page)

Battery

4S; T-Hobby suggests 750–1100 mAh. (Ligpower (T-Motor) product page, T-Hobby product page)

Frame

3.5-inch freestyle or ducted cinewhoop frames, for a take-off weight of 250–350 g, per T-Hobby. Four M2 holes on a 12 mm circle. (T-Hobby product page, Ligpower (T-Motor) product page)

Where to buy

• Ligpower (T-Motor)T-Motor's UAV-power store; pre-sale, ships in 15–20 days
  $22.90seen Oct 19, 2026
  Visit
• T-HobbyT-Motor's hobby-brand store
  $22.90seen Oct 19, 2026
  Visit

Plain links, not affiliate links. Prices change; the store’s page has the current one.

Full specs

Bench data

Redrawn from T-Motor’s test reports. Thrust is static pull on a bench, more than you get in flight. Power is volts × amps; efficiency is thrust divided by power.

Inside the motor

A brushless outrunner: the coils stand still in the middle and the magnets spin around them. From the top down:

• Bell. One piece of CNC-machined 7075 aluminium, 21.4 mm across, held on by a single M2 screw underneath; fourteen spokes in the top. (Ligpower (T-Motor) product page, T-Motor drawing)
• Shaft. Titanium, 3 mm, running the full length of the motor; it stands 10 mm above the bell, with 9 mm of M3 thread for the prop nut. (Ligpower (T-Motor) product page, T-Motor drawing)
• Magnets and bearings. Nickel-plated arc magnets; imported 684ZZ bearings; balanced to within 5 mg. (Ligpower (T-Motor) product page)
• Base. Dark grey, 2 mm thick, with four M2 holes on a 12 mm circle; 24 AWG silicone leads, 150 mm long. (T-Motor drawing, Ligpower (T-Motor) product page)

How fast it spins

KV is the motor’s no-load speed per volt. With nothing on the shaft, the 3650KV version reaches about these speeds; a prop loads the motor and brings it down, typically to around 70–75% of these figures at full throttle.

A 14-pole rotor has 7 pole pairs, so every turn of the shaft is 7 electrical cycles, and a six-step ESC switches the phases 42 times per turn.

About the 3D model

A generic outrunner drawn from T-Motor’s published sizes: the 16 × 4.5 mm stator, 21.4 mm bell, 13.1 mm height, 3 mm shaft, 12 mm mounting circle and 12 teeth and 14 magnets. Anything T-Motor doesn’t publish is typical for a motor this size, and the bell’s spoked top, the base and the inside are a generic design, not this motor’s. The colours are read off the maker’s product photos. There are no logos or markings: it is our drawing, not the maker’s.

Sources

1. T-Motor (Ligpower, its UAV-power brand): ITS-1604.5 KV3650 product page (feature text, specifications, tech specs and test data as text; drawing; product photos; price). Test data columns as T-Motor gives them: voltage, throttle, current, RPM, thrust in gf, power, efficiency in gf/W, torque; one motor temperature, the casing after 10 s at 80% throttle. Retrieved Oct 19, 2026.
2. T-Motor (Ligpower): ITS 1604.5 technical drawing, with the M3 prop nut (image on the product page, S1). Retrieved Oct 19, 2026.
3. T-Hobby (T-Motor's hobby brand): T-HOBBY x IT'S FPV 1604.5 3650KV Motor for 3.5" FPV Drone, product page (description, combinations guide, specifications and FAQ as text; the same drawing, specifications, test data and packing list as S1, as images; price). Retrieved Oct 19, 2026.